On 12-02-03 9:00 AM, angliski_jigit wrote:
Hi All,
I am trying to build in a progress-tracker into my loops that let me have a
sense of their progress. I'd like to be able to output to screen a series of
periods "...." etc. for each completion of the loop, but I<don't> want to
build a pyramid, e.g.
.
..
...
....
etc. So I need to be able to delete<the last line> of the console entry to
accomplish this. There are commands to erase the whole console, but that's
not what I want either; ideally, the command would allow me to erase the
last line or the last x lines.
Just don't write out a newline. E.g.
for (i in 1:10) {
cat(".")
flush.console()
Sys.sleep(1)
}
You can write out a CR using \r if you want to overwrite the previous
line, e.g.
for (i in 10:0) {
cat(i, " \r")
flush.console()
Sys.sleep(1)
}
Duncan Murdoch
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